[DNSOP] AD + CD bits in query?

Petr Špaček <petr.spacek@nic.cz> Mon, 25 June 2018 13:23 UTC

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Date: Mon, 25 Jun 2018 15:23:01 +0200
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Subject: [DNSOP] AD + CD bits in query?
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Hello dnsop,

it seems to me that recursive resolver behavior for queries with AD + CD
bits set at the same time is a bit fuzzy and I want to check what
opinions WG participants have:

My understanding of
https://tools.ietf.org/html/rfc6840#section-5.8
https://tools.ietf.org/html/rfc4035#section-3.2.3
is that answer to query with `AD + CD` can have AD set if the answer is
comming from from resolver's cache (assuming the answer was stored into
cache while processing query *without* CD bit set).

What do you think?
Do you see any operational impact if the AD is OR is not set in answers
with CD set?

Thanks.

-- 
Petr Špaček  @  CZ.NIC